Connecting 2, or more, Arduinos via Serial (or other options)

Projects General Guidance
1

Hi!

I am wondering how I can plug two Arduino's to 1 laptop and have them communicate with each other in the best way possible.

The setup is 1 laptop, 2 Arduino's connected with separate USB ports. (each Arduino has 1 sensor and a set of lights, and I want Arduino A to send a signal to Arduino B and vice versa).

Another setup would be 2 laptops and 1 Arduino connected to each through USB.

I was thinking maybe through the Serial ports with different baud rates.

Any thoughts??

2

I was thinking maybe through the Serial ports with different baud rates.

Each Arduino would be on a different serial port. You need some application on the PC that can read from each serial port and write to the other.

Or, forget the PC, and just hook the two Arduinos together - RX on one to TX on the other and vice versa (and grounds).